Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quanto tonelagem tem um Fate of sunk, e um Flag of great britain, e uma Date of 26 september 1940, e Deaths of 2?
 ###Tabelas: CREATE TABLE opinion_polls (opinion_polls_id AUTO_INCREMENT PRIMARY KEY, Polling Firm VARCHAR, Date of Polling VARCHAR, Link VARCHAR, Liberal INT, Green INT) CREATE TABLE defunct_callsigns (defunct_callsigns_id AUTO_INCREMENT PRIMARY KEY, Callsign VARCHAR, Area served VARCHAR, Band VARCHAR, Freq currently VARCHAR, Purpose VARCHAR) CREATE TABLE finalised_league_table (finalised_league_table_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Game INT, Draw INT, Loss INT, Goal Gain INT, Goal Loss INT, Goal Diff INT, Point INT) CREATE TABLE most_played_songs (most_played_songs_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Song title VARCHAR, Composer(s) VARCHAR, Performer(s) VARCHAR, Year INT) CREATE TABLE summary_of_raiding_history (summary_of_raiding_history_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Ship Name VARCHAR, Flag VARCHAR, Tonnage ( GRT ) INT, Fate VARCHAR, Deaths INT)  
SELECT SUM Tonnage ( GRT ) FROM summary_of_raiding_history WHERE Fate = sunk AND Flag = great britain AND Date = 26 september 1940 AND Deaths = 2